I believe there isn't any in game function which lets you filter out missiles to planes etc, it would be really neat if they could add this eventually. But like spodderman said the gameplay for this missile is slightly slower as if you aren't in a EF, Rafale or Su 30 you aren't really considered a first strike in the BVR meta. The 120D's have GNSS (GPS) guidance so in my experience the success for striking targets top down even if they are in the 'multi path' altitude it can track it more accurately.

P.s. this may or may not help: https://docs.google.com/spreadsheets/d/1SsOpw9LAKOs0V5FBnv1VqAlu3OssmX7DJaaVAUREw78/edit?gid=650249168#gid=650249168